Why in the News
The Mayon Volcano recently erupted, leading to the evacuation of thousands of people in affected areas of the Philippines.
About Mayon Volcano
- Type: Active stratovolcano (composite volcano)
- Location: Albay province, Luzon Island
- Height: 2,462 metres
- Known as: “World’s most perfect volcanic cone” due to its symmetry
Geographical Setting
- Part of the Pacific Ring of Fire
- Located near the Philippine Trench
- Formed at a convergent plate boundary
- Philippine Sea Plate subducting beneath the Philippine Mobile Belt
What is a Stratovolcano
- Tall, steep cone shaped volcano
- Built from alternating layers of:
- Lava
- Pyroclastic material
- Found mainly in subduction zones
- Magma type:
- Andesite and dacite (viscous lava)
- Leads to explosive eruptions
| [2024] Consider the following: 1. Pyroclastic debris 2. Ash and dust 3. Nitrogen compounds 4. Sulphur compounds How many of the above are products of volcanic eruptions? [A] Only one [B] Only two [C] Only three [D] All four |
